2015 Jaguar F-Type Coupe on display during a press preview at the North American International Auto Show January 14, 2014 in Detroit. AFP PHOTO/Stan HONDA (Photo credit should read STAN HONDA/AFP/Getty Images) STAN HONDA AFP/Getty Images

DETROIT, MI - JANUARY 14: A Nissan Sport Sedan Concept is displayed during a media preview day at the North American International Auto Show (NAIAS) on January 14, 2014 in Detroit, Michigan. The auto show opens to the public January 18-26. (Photo by Scott Olson/Getty Images) Scott Olson Getty Images

DETROIT, MI - JANUARY 14: Porsche's new 911 Targa is displayed at the North American International Auto Show (NAIAS) on January 14, 2014 in Detroit, Michigan. The auto show opens to the public January 18-26. (Photo by Scott Olson/Getty Images) Scott Olson Getty Images

DETROIT, MI - JANUARY 14: A Nissan Pathfinder sits on display behind a guest who is trying out Nissan's 1DX 3D Experience at the North American International Auto Show (NAIAS) on January 14, 2014 in Detroit, Michigan. The auto show opens to the public January 18-26. (Photo by Scott Olson/Getty Images) Scott Olson Getty Images

The 2015 Cadillac ATS coupe is unveiled during a press preview at the North American International Auto Show January 14, 2014 in Detroit, Michigan. AFP PHOTO/Stan HONDA (Photo credit should read STAN HONDA/AFP/Getty Images) STAN HONDA AFP/Getty Images

The 2015 Lexus RCF is revealed at the press preview at the 2014 North American International Auto Show in Detroit, Michigan on January 14, 2014. AFP PHOTO/Geoff Robins (Photo credit should read GEOFF ROBINS/AFP/Getty Images) GEOFF ROBINS AFP/Getty Images

The Subaru WRX STI Launch Edition is introduced at the press preview at the 2014 North American International Auto Show in Detroit, Michigan on January 14, 2014. AFP PHOTO/Geoff Robins (Photo credit should read GEOFF ROBINS/AFP/Getty Images) GEOFF ROBINS AFP/Getty Images

DETROIT, MI - JANUARY 14: Cadillac introduces the 2015 ATS Coupe at the North American International Auto Show on January 14, 2014 in Detroit, Michigan. The auto show opens to the public January 18-26. (Photo by Scott Olson/Getty Images) Scott Olson Getty Images

DETROIT, MI - JANUARY 14: The Subaru WRX STi is revealed at the press preview of the 2014 North American International Auto Show January 14, 2014 in Detroit, Michigan. Approximately 5000 journalists from more than 60 countries are expected to attend. The 2014 NAIAS opens to the public on January 18th and ends January 16th. (Photo by Bill Pugliano/Getty Images) Bill Pugliano Getty Images

The Acura TLX GT race car is unveiled at the 2014 North American International Auto Show in Detroit on January 14, 2014. AFP PHOTO/Geoff Robins (Photo credit should read GEOFF ROBINS/AFP/Getty Images) GEOFF ROBINS AFP/Getty Images

The 2015 Ford Mustang GT is seen during a press preview at the North American International Auto Show January 14, 2014 in Detroit, Michigan. AFP PHOTO/Stan HONDA (Photo credit should read STAN HONDA/AFP/Getty Images) STAN HONDA AFP/Getty Images

The 2014 Mazda 3 sedan is seen during a press preview at the North American International Auto Show January 14, 2014 in Detroit, Michigan. AFP PHOTO/Stan HONDA (Photo credit should read STAN HONDA/AFP/Getty Images) STAN HONDA AFP/Getty Images

Mazdas SKYACTIV-D diesel racecar on display during a press preview at the North American International Auto Show January 14, 2014 in Detroit, Michigan. AFP PHOTO/Stan HONDA (Photo credit should read STAN HONDA/AFP/Getty Images) STAN HONDA AFP/Getty Images

The Chrysler SRT Viper GTS on display during the press preview at the North American International Auto Show January 14, 2014 in Detroit. AFP PHOTO/Stan HONDA (Photo credit should read STAN HONDA/AFP/Getty Images) STAN HONDA AFP/Getty Images

The Smart Cabriolet-ED all electric vehicle on display during the press preview at the North American International Auto Show January 14, 2014 in Detroit. AFP PHOTO/Stan HONDA (Photo credit should read STAN HONDA/AFP/Getty Images) STAN HONDA AFP/Getty Images

The Renault-powered Infiniti Redbull Formula1 race car is displayed during a press preview at the North American International Auto Show January 14, 2014 in Detroit. AFP PHOTO/Stan HONDA (Photo credit should read STAN HONDA/AFP/Getty Images) STAN HONDA AFP/Getty Images

The 2014 Ford Fiesta ST is seen during a press preview at the North American International Auto Show January 14, 2014 in Detroit. AFP PHOTO/Stan HONDA (Photo credit should read STAN HONDA/AFP/Getty Images) STAN HONDA AFP/Getty Images

The Lincoln MKC crossover SUV is seen during a press preview at the North American International Auto Show January 14, 2014 in Detroit. AFP PHOTO/Stan HONDA (Photo credit should read STAN HONDA/AFP/Getty Images) STAN HONDA AFP/Getty Images

The Volkswagen Beetle Dune is seen during a press preview at the North American International Auto Show January 14, 2014 in Detroit. AFP PHOTO/Stan HONDA (Photo credit should read STAN HONDA/AFP/Getty Images) STAN HONDA AFP/Getty Images

DETROIT, MI - JANUARY 14: Sarrah Fegan shows off the limited edition Dodge Challenger Shaker at the North American International Auto Show (NAIAS) on January 14, 2014 in Detroit, Michigan. The auto show opens to the public January 18-26. (Photo by Scott Olson/Getty Images) Scott Olson Getty Images

DETROIT, MI - JANUARY 14: Chrysler shows off the 2015 SRT Viper at the North American International Auto Show (NAIAS) on January 14, 2014 in Detroit, Michigan. The auto show opens to the public January 18-26. (Photo by Scott Olson/Getty Images) Scott Olson Getty Images

DETROIT, MI - JANUARY 14: Ford displays the 2015 50th anniversay Mustang at the North American International Auto Show (NAIAS) on January 14, 2014 in Detroit, Michigan. The auto show opens to the public January 18-26. (Photo by Scott Olson/Getty Images) Scott Olson Getty Images

DETROIT, MI - JANUARY 14: For the 50th anniversary of the Ford Mustang, Ford displayed a1962 Ford Mustang 1 concept car (R) which evolved into the first productin Mustang (L) at the North American International Auto Show (NAIAS) on January 14, 2014 in Detroit, Michigan. The auto show opens to the public January 18-26. (Photo by Scott Olson/Getty Images) Scott Olson Getty Images

DETROIT, MI - JANUARY 14: A visitor looks over Audi cars on display at the North American International Auto Show (NAIAS) on January 14, 2014 in Detroit, Michigan. The auto show opens to the public January 18-26. (Photo by Scott Olson/Getty Images) Scott Olson Getty Images

DETROIT, MI - JANUARY 14: Mercedes-Benz introduces the new C 250 BlueTec 4MATIC at the North American International Auto Show (NAIAS) on January 14, 2014 in Detroit, Michigan. The auto show opens to the public January 18-26. (Photo by Scott Olson/Getty Images) Scott Olson Getty Images

during a press preview at the North American International Auto Show January 14, 2014 in Detroit. AFP PHOTO/Stan HONDA (Photo credit should read STAN HONDA/AFP/Getty Images) STAN HONDA AFP/Getty Images

DETROIT, MI - JANUARY 14: A visitor looks over engine options on display next to a 2015 Chevrolet ZO6 Corvette at the North American International Auto Show (NAIAS) on January 14, 2014 in Detroit, Michigan. The auto show opens to the public January 18-26. (Photo by Scott Olson/Getty Images) Scott Olson Getty Images